// Copyright (c) 2008-2010, Arne Claus
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are permitted provided that the 
// following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice, this list of conditions and the following 
//   disclaimer.
// - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following 
//   disclaimer in the documentation and/or other materials provided with the distribution.
// - Neither the name Arne Claus nor the names of any contributors may be used to endorse or promote products
//   derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 
// USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef __INCLUDED_CRL_VERTEX_BUFFER_DESCRIPTOR_H_
#define __INCLUDED_CRL_VERTEX_BUFFER_DESCRIPTOR_H_

#include "CBL_Defines.h"
#include "CRL_Defines.h"

CB_SUBNAMESPACE_START(RenderLib)

class CVertexBufferDescriptor
{
public:
	
	#define ENUM_ITEM(_Name, _Size, _Normlized, _Elements, _OpenGLFormat, _D3D9Format, _D3D10Format) Vertex##_Name,
	enum EVertexFormat
	{
		Unused = 0,
		#include "CRL_VertexFormatsEnum.h"
		NumVertexFormats
	};
	#undef ENUM_ITEM
	
	static const char* s_VertexFormatNames[NumVertexFormats];
	
public:
	
	#define ENUM_ITEM(_Name) _Name,
	enum EVertexSlot
	{
		Invalid = 0,
		#include "CRL_SlotNameEnum.h"
		NumVertexSlots
	};
	#undef ENUM_ITEM
	
	static const char*  s_VertexSlotNames[NumVertexSlots];
    static const uint32	s_VertexFormatSizeByte[NumVertexFormats];
    static const bool   s_VertexFormatNormalized[NumVertexFormats];
    static const uint32 s_VertexFormatElements[NumVertexFormats];

public:

	enum EStorageType
    {	
        ManagedStorage = 0,
        StaticStorage,
        DynamicStorage,
        NumStorageTypes
    };

public:
	
	RENDERLIB_API CVertexBufferDescriptor();
	
public:
	
	RENDERLIB_API uint32 AddSlot(EVertexSlot _SlotType, EVertexFormat _SlotFormat);
	RENDERLIB_API void CalculateStride();
	
	void SetStride(uint32 _Bytes)							{ m_Stride = _Bytes; }
	
	EVertexSlot GetSlotType(uint32 _SlotIndex) const		{ return m_SlotType[_SlotIndex]; }
	EVertexFormat GetSlotFormat(uint32 _SlotIndex) const	{ return m_SlotFormat[_SlotIndex]; }
	
    bool GetSlotNormalized(uint32 _SlotIndex) const			{ return s_VertexFormatNormalized[m_SlotFormat[_SlotIndex]]; }
    uint32 GetSlotElementCount(uint32 _SlotIndex) const		{ return s_VertexFormatElements[m_SlotFormat[_SlotIndex]]; }
    uint32 GetSlotSize(uint32 _SlotIndex) const				{ return s_VertexFormatSizeByte[m_SlotFormat[_SlotIndex]]; }
    
	uint32 GetStride() const								{ return m_Stride; }
	uint32 GetNumSlots() const								{ return m_SlotCount; }
	
    void SetStorageType(EStorageType _Type)					{ m_StorageType = _Type; }
    EStorageType GetStorageType() const						{ return m_StorageType; }
    
    void SetVertexCount(uint32 _Count)						{ m_VertexCount = _Count; }
    uint32 GetVertexCount() const							{ return m_VertexCount; }
    
    uint32 GetSizeByte() const								{ return m_VertexCount * m_Stride; }
    
private:
	
	EVertexSlot		m_SlotType[NumVertexSlots];
	EVertexFormat	m_SlotFormat[NumVertexSlots];
	
	EStorageType	m_StorageType;
	uint32			m_SlotCount;
	uint32			m_Stride;
    uint32 			m_VertexCount;
};

CB_SUBNAMESPACE_END

#endif